package com.zhaoye.service;


import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;


/**
 * @author feng
 * @Date 2021/11/13 17:05
 * 全局服务降级
 */
@Service
public class PaymentService {

    public String payment_ok(Integer id) {
        return "线程池: " + Thread.currentThread().getName() + "payment_ok,id: " + id + "\t" + "O(∩_∩)0哈哈";
    }

    /**
     * 服务降级:设定阈值，超过之后，兜底方案
     */
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")
    })
    public String payment_TimeOut(Integer id) {
        int timeNumber = 3;
        //int age = 10 / 0;
        try {
            TimeUnit.SECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池:" + Thread.currentThread().getName() + "payment_TimeOut" + id + "\t" + "O(∩_∩)O哈哈" + "耗时(s)";
    }

    public String paymentInfo_TimeOutHandler(Integer id) {
        return "线程池" + Thread.currentThread().getName() + "paymentInfo_TimeOutHandler,id" + id + "服务超时或者报错, /(ㄒoㄒ)/~~";
    }


    //服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),//是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"), //请求量峰值10次
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"), //时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60")      //失败率多少拉闸
    }
    )
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("******id不能为负数" + id);
        } else {
            String serialNumber = IdUtil.simpleUUID();
            return Thread.currentThread().getName() + "\t" + "调用成功，流水号:" + serialNumber;
        }
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id不能为负数，请稍后再试，/(ㄒoㄒ)/~~";
    }

}
